Journal
DALTON TRANSACTIONS
Volume 41, Issue 40, Pages 12524-12529Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2dt30587a
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- Department of Science and Technology under the SERB
- CSIR
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Depolymerization reactions of organostibonic acids with protic ligands have been investigated. Reaction of arylstibonic acids with 8-hydroxyquinoline (8-HQ), or {2-[1H-pyrazol-5(3)-yl]naphthalene-1-ol} (H(2)naphpz) in a 1 : 1 stoichiometry in refluxing toluene affords adamantane-like L-4(RSb)(4)O-6 clusters [(p-XC6H4Sb)(4)(O)(6)(Q)(4)] (where X = Cl (1), Br (2), QH = 8-hydroxyquinoline), [(p-ClC6H4Sb)(4)(O)(6)(Hnaphpz)(4)]center dot H(2)naphpz (3) and [(p-Br-C6H4Sb)(4)(O)(6)(Hnaphpz)(4)](2)center dot H(2)naphpz (4). Further a tetrameric organoantimony oxo cluster, L-4(RSb)(4)O-4 [(p-ClC6H4Sb)(4)(O)(4)(naphpz)(4)] (5) has also been isolated as a side product in the reaction of arylstibonic acid with naphthylphenolic pyrazole. Interestingly 1-4 structurally resemble the dimeric form of the antimony oxide Sb2O3 and its mineral senarmontite.
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